Abusive men are adept at hiding who they truly are through love bombing and other methods. But they're not very good at hiding their true nature when confronted with disappointment. They get pouty, demanding, entitled, even jealous. So putting him in a situation where he's likely to have that reaction is an easy test to run.

Honestly your responses here are concerning. If you're more concerned about a "good" guy's reaction to being disappointed, than her safety and the whole reason she'd need to do this test in the first place, then I already know all I need to know about you.